I love it when a bike has a few different colors that combine to create a really unique an interesting design. I've always loved the design of Look. Nothing too complicated though, add too many colors and lines and it just looks messy.
I also like the simple and sleek look. Bikes that aren't flashy or made to look impressive but let their parts to the talking.

Like the design of this BMC Roadracer for example. Real simple but very sleek and cool looking IMO. You can't really see it in the pic but much of it is a pure carbon pattern as well, which looks awesome.
It rides pretty good as well.
